(19)

(11)

EP 2 739 782 A1

(12)

(43) Date of publication: 11.06.2014 Bulletin 2014/24 (21) Application number: 12822095.1 (22) Date of filing: 02.08.2012

(51) International Patent Classification (IPC):  D21H 19/32(2006.01) C09D 101/10(2006.01) D21H 19/52(2006.01) C09D 105/14(2006.01) (86) International application number: PCT/FI2012/050762 (87) International publication number: WO 2013/021099 (14.02.2013 Gazette 2013/07)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 05.08.2011 FI 20115784 (71) Applicant: Teknologian Tutkimuskeskus VTT 02044 VTT (FI)	(72) Inventors: TALJA, Riku FI-02044 Vtt (FI) ROPPONEN, Jarmo FI-02044 Vtt (FI) WIKBERG, Hanne FI-02044 Vtt (FI) POPPIUS-LEVLIN, Kristiina FI-02044 Vtt (FI) HARLIN, Ali FI-02044 Vtt (FI) (74) Representative: Berggren Oy Ab  P.O. Box 16 Antinkatu 3 C 00101 Helsinki 00101 Helsinki (FI)